A Cisco Unity installation is configured as follows:

72 ports
Cisco Unified Communications Manager
NEC NEAX 2400 with 9-port PMG units (5)
first 36 Cisco Unity ports for Cisco Unified Communications Manager second 36 Cisco Unity ports for NEC NEAX 2400

While messages left on the Cisco PBX cause the MWI indicators to light, messages left on the NEC do not. What needs to be done to make the MWI indicators light on the NEC PBX phones?

A.
Specify the Cisco Unity account policy to use two switches.

B.
Specify the Cisco Unity class of service to use two switches.

C.
Specify the telephone system each subscriber’s account will use.

D.
Specify the Cisco Unity PIMG serial port to use MWI On and Off Codes.